22 / Use
r’s Manual Sanli LS42 - LSP42 - LSP46-LBP46
5. Trouble shooting
Problem
Probable causes
Solution
The engine does not
start
Incorrect throttle position
Spark plug cap defective
Fuel tank empty
Fuel flow valve closed
Ignition malfunction
Select the correct setting
Replace the spark plug cap
Fill fuel tank
Open the fuel valve
Contact a SANLI approved
dealer
The engine engages,
but starting is difficult
Operator control lever not
properly engaged
Engine oil too viscous for
operating conditions
Press fully the lever operator
Change the oil
The transmission drive
operates but loses
efficiency
The transmission
engagement cable is loose
The drive V-belt is loose
Adjust the cable using the
tensioning device
Contact a SANLI approved
dealer
The engine becomes
excessively hot
Engine cooling fins blocked
Low oil level
Clean engine exterior carefully
Check the oil level
Heavy vibrations from
the machine
Screws or bolts loose
Blade attachment bolt loose
Unbalanced or damaged
blade
Tighten the screws/bolts
Check blade attachment bolt
Replace blade
The engine runs
irregularly
Air filter dirty
Spark plug dirty
Poor quality or contaminated
petrol
Clean or replace the air filter
Clean spark plug
Drain fuel tank and refill with
unleaded 95 RON minimum
Fall in engine power
Air filter dirty
Seized or blocked throttle
control
Lack of engine compression
Clean or replace the air filter
Clean the throttle assembly
Contact a SANLI approved
dealer
Uneven or poor finish
with yellowing of the
longer/lower grasses
Blunt blade
Cutting height set too low
Engine speed is too low
Sharpen or renew the blade
Raise the cutting height
Advance throttle to maximum
Inadequate ejection of
cut grass into collector
bag and/or excess
grass clippings left on
the surface
Engine speed is too low
Cutting height is too low
Worn or bent blade
Blockage between deck and
collector bag or bag blocked
Advance throttle to maximum
Raise the cutting height
Replace the blade
Clear blockage/clean bag
